Geometry help! Law of Syllogism?

Question

Use the law of syllogism to determine a conclusion that follows from statements (1) & (2). If a valid conclusion dose not follow , write no valid conclusion

Im hoping you guys know what syllogism mean so here I go

1.

(1)if my dog dose not bark all night,I will give him a treat.

(2)if I give my dog a treat, then he will wag his tail

2.

(1)If a polygon has three sides, then the figure is a triangle

(2)If a figure is a triangle ,then the sum of the measures of the interior angles is 180.

3.

(1) If concert is postponed, then I will be out of town.

(2) If the concert is postponed, then it will be held in the gym

Answer 1

1) my dog did not bark all night, so he will wag his tail

2) If a polygon has three sides, then the sum of the measures of the interior angles is 180.

3) no valid conclusion